/*
 * Copyright (C) 2008 by Xume.
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.xume.critann.jpa.criteria;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

/**
 * $Id: QueryContext.java 15 2008-10-12 10:46:49Z jsiebens $
 * 
 * @author Johan Siebens
 */
public class QueryContext {

	private int parameterCounter;

	private Map<String, Object> parameters = new HashMap<String, Object>();

	public String getEntityAlias() {
		return "this";
	}

	public String generateParameterName(Object parameterValue) {
		String name = "p" + (parameterCounter++);
		parameters.put(name, parameterValue);
		return name;
	}

	public Map<String, Object> getParameters() {
		return Collections.unmodifiableMap(parameters);
	}

}
